'01 f350 idle problem
alright guys, i need your help once again. My dads truck is running silly. Heres what its doing. Runs fine, but idles a little slow sometimes, when you give it throttle, everythings ok, but when you let off the idle drops to 500 sometimes and is a little rough, sometimes stalling, sometimes leveling out to 700 rpm. its hit or miss, im not getting any codes. I just replaced 2 injectors, i have bad compression in number 8, 300lbs, but i cant imagine one bad cylinder affecting the idle like this, is there anything i can do to adjust the timing to increase idle?